Improvement in swivel-plows



JQHARTMANN Swivel-Plow No 198,611. ;Ptepted Deb. 25, 1877 arrangement of JULIUS HARTMANN, OF LOUISVILLE, KENTUCKY.

IMPROVEMENT m SWIVEL-FLOWS.

- Specification forming part of Letters Patent No. 198,611,, dated December 25, 1877 application filed h October 27, 1877.

To all whom it may concern:

Be it known that I, JULIUS HARTMANN, of v Louisville, in the county of Jefferson and State of Kentucky, have invented a new and useful Improvement in Swivel-Flows; and Ido hereby declare that the following is a full, clear,

I and exact description of the same.

certain defects which it is the object of my ill-- vention to remove, andto thereby provide aplow adapted to the needs of every farmer.

To this end. I adapt the construction and parts hereinafter described, and illustrated in accompanying drawing, in whichp 1 Figure l is a plan view.- Figs. 2, 3, 4 are cross-sections on the lines as y 2:, respectively, of Fig. 5. Fig. 5 is a'plan view of the point and mold-board. Fig. 6 is a side elevation of the plow. Fig. 7 is a cross-section of the bottom or land-side bar.

In said drawing, A indicates the point, an B the mold-board, of my improved plow.- G is the standard; D, the bottom or land-side bar; E, the beam, and F the changeable brace or locking device. I v

The outline of the point Ais triangular, and it is made concave in a transverse direction. The'front end of the mold-board B meets or abuts the rear edge of the point A, and is of like width thereat, the two forming an angular projection, a, on each side.

Thespaces directly in rear of the lateral angles a of the point A are thus filled by the ins creased width of the mold-board, so that weeds, grass, 850., can find no lodgment there, as in other hill-side plows, whose mold-boards are narrowed at the front end, as shown by dotted lines, Figs. 1 and 5, but will pass along over the top edge of the mold-board on the land side.

The mold-board is gradually narrowed or contracted in width from such projections a a back to the standard 0, which is opposite, or nearly so, to the lengthwise middle of the point and mold-board taken together. Forwardof such middle pointgb themold-board and trian- -when in operation as is the upper side. tion is to avoid excessive friction between the This form of the wearing side or surface of the point and mold-board is such as to enable the plow to turn the furrow-shoe over hat with the least amount of draft or power, to run free or scour well, and not clog with stubble in any soil, and to also pulverize the soil in a superior manner.

The mold-board and point are so shaped as to extend in front of the standard and laterally therefrom on the side opposite that on which the furrow-slice is turned, thus forming what is known as a center-draft plow; V

The front edge of the point A acts as a colter, and the lateral projection of the same past the standard prevents choking with grass, weeds, or stubble, which constitutes a great annoyance in using the old form of swivel- 7 plow.

The standard 0 is provided-with inclined shoulders or projections c, which engage orabut the edge ofthe mold-board when the same is locked by brace F on either side of the beam. .This relieves the pivots of the reversible mold-board of part of the strain which they wouldeotherwise have to sustain, and gives the plow .the same apparent rigidity possessed by plows which are not reversible.

The land-side or bottom bar D is beveled or inclined on each side fromthe upper edge downward. In other words, said bar is broader on The object of this construcbar and land when the plow is in use. The piece (1, to which the point A is attached, is also similarly beveled along its lower side or edge. To sum up the advantages of my improved plow, it has the cheapness, lightness, and

strength of the old form of swivel-plow, will not choke, will scour perfectly in all kinds of soil, and turns the furrow-slice with the least a amount of draft, and pulverizes the soil well.

I do not claim, broadly, a triangular concave plow-point, nor a convex mold-board, nor abeveled land-side; nor do I claim a centerdraft plow, since I am aware theseare not new 5. but

What I claim v is- 4 1. As the hereinbefore'specified improvement-- in swivel-plows, the conibination, with the beam and standard, of the swiveled moldboard and point, extending laterally to form a center-draft, and otherwise constructed and arranged as shown and deseribed-that is to say, the wearing-surface formed of said moldboard and point having a gradually-increasing convexity andwidth back of the center b, and a gradually increasing concavity and width forward of the center to the angular projections cm, the concavity extendingthence to the nose of the point, all as set forth, 'for the purpose specified.

res-Air n 2. As an improvement in swivelplows, the

conibination of the reversible mold-board and point with the standard having the inclined shoulders or projections, substantially as and for the purpose specified.

3. As an improvement in swiveled or reversible plows, the bottomvor land-side bar,

beveled or made oblique onopposite sides, as

shown and described.

JULIUS HARTMAYNNI 

